The concept of the memory of water goes back to 1988 when the late Professor Jacques Benveniste published, in the international scientific journal Nature, claims that extremely high 'ultramolecular' dilutions of an antibody had effects in the human basophil degranulation test, a laboratory model of immune response. In other words, the water diluent 'remembered' the antibody long after it was gone. His findings were subsequently denounced as 'pseudoscience' and yet, despite the negative impact this had at the time, the idea has not gone away.
https://www.elsevier.com/about/press-releases/research-and-journals/the-memory-of-water-is-a-reality
Benveniste was a French immunologist who sought to demonstrate the plausibility of homeopathic remedies "independently of homeopathic interests" in a major scientific journal.[3] To that end, Benveniste and his team at Institut National de la Santé et de la Recherche Médicale (INSERM, French for National Institute of Health and Medical Research) diluted a solution of human antibodies in water to such a degree that there was virtually no possibility that a single molecule of the antibody remained in the water solution. Nonetheless, they reported, human basophils responded to the solutions just as though they had encountered the original antibody (part of the allergic reaction). The effect was reported only when the solution was shaken violently during dilution.[4] Benveniste stated: "It's like agitating a car key in the river, going miles downstream, extracting a few drops of water, and then starting one's car with the water."[5] At the time, Benveniste offered no theoretical explanation for the effect, which was later called "water memory" by a journalist reporting on the study.[6]
https://en.wikipedia.org/wiki/Water_memory
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